Apparatus for reheating exhaust-steam



2 Sheets-Sheet 1.

(No ModeL) V L. HUSSEY.

APPARATUS FOR REHEATING EXHAUST STEAM. No. 279,247. Patented June12,1883.

if ITWB TQR ATTORNEY (No Model.) 2 Sheets-Sheet 2.

V 4 L. HUSSBY. APPARATUS FOR REHEATING EXHAUST STEAM. No. 279,247.

Patented June 12,1883.

R 0 T N E V N Unirnn STATES PArEnr OFFICE.- J

. LEVI HUSSEY, or New YORK, N. Y., ASSIG-NOR or ONE-HALF roenonen w.DONALDSON, or ORANFORD, NEW JERSEY.

APPARATUS FOR REH EATING EXHAUST STEAM;

SPECIFICATION forming part of Letters Patent No. 279,247, dated June 12,1883,- Application filed February 16, 1883. (Nommleh) To all whom it mayconcern Be it known that], LEVI HUSSEY, of the city, county, and Stateof New York,..have invented certain new and useful Improvements inApparatus for Reheating Exhaust-Steam and Superheating Live Steam, ofwhich the following is a specification.

This invention relates to an improved appa ratus for reheatingexhaust-steam, and also for using the same apparatus for thesuperheating of live steam whenever the steam-engine supplying theexhaust-steam is .not ij'unning, so that thereby a uniform degree of.heat can be supplied to the drying-rooms, or. for other purposes. g

The invention consists in the combination, with a steam-boiler, of ancxhauststeanrreheating or live steam superheating device located abovethe boiler within aflne through which the products of combustion pass,said device being connected with a valved exhaustpipe of thesteam-engine, and with a valved live-steam pipe from the steam-boiler,whereby it may be readily converted from an exhaust-steam reheater to alive-steam superheater, and with a valved steam-conducting pipe whichconveys the reheated exhauststeam or the superheated live steam to theradiators or. other appliances for utilizing the same.

In the accompanying drawings, which illustrate my invention, Figures 1and 2 represent vertical longitudinal sections of my improved apparatusfor reheating exhaust-steam and superheating live steam, and Fig. 3 is avertical transverse section through the system of V heating-pipes shownin Fig. 2.

Similar letters of reference indicate corre sponding parts.

Referring to the drawings, A represents a steam-boiler of any approvedconstruction, and B the brick-work by which the same is supported. Theproducts of combustion are conducted from the furnace 0 along the bottom and sides of the boiler to the rear end of the same, thence forwardthrough the tubular flues of the boiler to a vertical flue, G, at thefront end thereof, thence into a top chamber, D, containingreheating-pipes E, supported therein in any suitable manner, and thencethrough the valved 'llue H or the valved flue H to the chimney. A mainexhaust-pipe,'F, leading from the steam-engine, provided with a valve,5', connects with the radiator, feed water heaters, or other devices forutilizing the exhaust-steam. F, connects the main exhaust-pipe below thevalve 8 with the lower end of the reheatingpipes E, and a pipe, I,connects the upper end of said pipes with said main exhaust-pipe abovesaid valve 8. The branch exhaustpipe is provided with a valve, f, andthe pipe I is provided with a valve, 2, and with a valved branch pipe,J, which may lead directly to a radiator or otherexhaust-steam-utilizing device. By closing the valve .9 of the mainexhaust-pipe and opening the valve f of the branch exhaustspipe theexhaust-steam will pass to and through the reheating-pipes, where itwill become reheated, and thence through the pipe I back to the mainexhaust-pipe or other pipe connected with the radiators, feedwaterheaters,or other device for utilizing the ..'aid steam.

vWhen the brickwork surrounding the system of pipes E or chamber 3 isproperly heated by the fire of the furnace G, the heat absorbed by thebrick walls is radiated and employed in connection with the direct heatof the products of combustion that are drawn around the system of pipesE, or through the chamber E, for reheating the exhaust-steam to aconsiderably higher temperature, the same being then conducted offthrough a valved pipe, I, connected to the upper end of theheating-pipes E orchamber E, for being used for heating up drying-rooms,and for other purposes. The pipe I, that conducts off the re heatedsteam, is provided with outlet-pipe K,

having a pressure-relief valve, K, so as to regulate the pressure in thesystem of heatingpipes and admit automatically the escape of steam ofhigher pressure.

Instead of locating the flue or chamber D immediately above theboiler,the vertical flue G may be extended, and instead of having asingle flue, D, through which the gaseous products of combustion pass,andaseries of small, pipes, E, through which the exhaust-steam passes,there may be a series of small fines,

A branch exhaust-pipe,

D, inclosed in a chamber, E, as shown in Figs. 2 and 3, in which casethe products of combustion may passfrom the vertical flue G to theexhaust-flue through the small fines D, while the exhauststeam passesthrough said chamber in contact with the outside of said pipes.

The system of heating-pipes E is further connected by a valved pipe, g,with adome, A, or with any other suitable part of the steam-boiler A, sothat live steam may be made to pass through the system of heatingpipesE, whenever the engine is stopped,either during the day or at night. Inthis case the stop coekf of the exhaust-pipe F is closed,and the valveof the live-steam pipe 9 is opened. The system. of heatingpipes E actsthen as a superheater of the live steam, and admits the lowering of thesteam-pressure in the boiler to a very low point-say five poundsthusinsuring greater safety, and a considerably smaller consumption of fuel,as the steam is super heated in passing through the system of pipes,without extra cost, by the heat of the products of combustion and theheat radiated by the brick walls. In this manner all the advantagesobtained by carryingsteam at a high pressure are secured for heatingpurposes with out any danger, or without any extra expense for fuel,simply by the heat that would otherwise pass ofi' through the chimney.

By the apparatus described, drying-rooms or other apparatus requiringheat maybe heated during the day by means of the reheated exhaust-steam,to which a high temheated exhaust steam.

perature is imparted in the system of heatingpipes, through which thesame is conducted, while at night live steam of alow temperature issuperheated in its passage through the heat ing-pipes without any extraexpenditure of fuel, and. applied for use in place of the re- Theexhaust steam from the engine, as well as the heat of the products ofcombustion, which would otherwise pass off through the chimney, are thusutilized for economical and effective use in the arts, and thereby aconsiderable saving in fuel is obtained.

Having thus described my invention, I claim as new and desire to secureby Letters Patent The combination, with a steam-boiler, of a verticalflue at one end thereof, a fine or fines above the boiler, anexhaust-steam-reheating device'within or around said flue or fines, avalved"exhaust steam. pipe, a pipe connecting said exhaust-steam pipewith the reheating device,-a valved live-steam pipe connecting thereheating device with the steanrbeiler, and a pipe that conducts thereheated exhaust-steam or the superheated live steam from said heat-

